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Reducing copies when writing png data.

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This commit is contained in:
tamasmeszaros
2019-03-18 18:02:50 +01:00
parent 24145cc14f
commit 04e03c840d
6 changed files with 88 additions and 12 deletions
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17
src/libslic3r/Zipper.cpp
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@@ -149,6 +149,23 @@ void Zipper::add_entry(const std::string &name)
m_entry = name;
}
void Zipper::add_entry(const std::string &name, const uint8_t *data, size_t l)
{
finish_entry();
mz_uint cmpr = MZ_NO_COMPRESSION;
switch (m_compression) {
case NO_COMPRESSION: cmpr = MZ_NO_COMPRESSION; break;
case FAST_COMPRESSION: cmpr = MZ_BEST_SPEED; break;
case TIGHT_COMPRESSION: cmpr = MZ_BEST_COMPRESSION; break;
}
if(!mz_zip_writer_add_mem(&m_impl->arch, name.c_str(), data, l, cmpr))
m_impl->blow_up();
m_entry.clear();
m_data.clear();
}
void Zipper::finish_entry()
{
if(!m_data.empty() > 0 && !m_entry.empty()) {